Leave it to Scott Disick to be romantic and a rascal at the same time!

The Keeping Up with the Kardashians star took to Instagram last night to post a candid pic of his baby mama Kourtney Kardashian. That's nothing new: Scott often Instagrams his lady. But he doesn't often do so when her shirt is halfway off!

The playful pic Scott posted shows Kourtney baring her abs with her shirt pulled up, a pose in which Kourtney probably wasn't expecting to be photographed.

But any points Scott may have lost for snapping the pic on the down low he made up for with his caption for the pic: "Looks like an angel @kourtneykardash," he wrote.

Scott and Kourtney often post cute pics and videos of themselves, sometimes even playing a joke or two on each other or on their fans. Recently, Scott posted a pic of the "engagement ring" he got for Kourtney, which turned out to just be a ring made out of balloons.

Just the other day, Scott and Kourtney posted a "date night" Keek video of the two of them lying in bed together and watching a movie:

On Sunday's episode of Keeping Up with the Kardashians, the videos are about to get even more intimate: Scott and Kourtney pull a prank by faking a "sex tape" dressed up as Bruce and Kris Jenner!

Tune in Sunday at 9/8c for an all-new episode of Keeping Up with the Kardashians, only on E!